Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 2CYU
The primary action of the biceps brachii muscle of the anterior arm is to flex the forearm at the elbow. However, when this muscle is inflamed, pain is felt in the shoulder. Explain this finding.
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Chapter 8 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 8.1 - What are the main functions of joints?Ch. 8.1 - 2. How are joints classified functionally?
Ch. 8.1 - How are joints classified structurally?Ch. 8.2 - Prob. 1QCCh. 8.2 - Prob. 2QCCh. 8.2 - 3. What is a syndesmosis? Where are syndesmoses...Ch. 8.2 - What are the features of a synchondrosis?Ch. 8.2 - What are the general features of a symphysis, and...Ch. 8.3 - What are the layers of the articular capsule, and...Ch. 8.3 - What functions are served by synovial fluid?
Ch. 8.3 - 3. Which type of cartilage makes up articular...Ch. 8.3 - 4. Why do synovial joints require stabilization?
Ch. 8.3 - 5. What are the basic structural and functional...Ch. 8.3 - What is osteoarthritis, and in what age group...Ch. 8.4 - Compare and contrast: gliding and angular motions,...Ch. 8.5 - 1. Compare the six structural classes of synovial...Ch. 8.5 - Which type of synovial joint has the greatest...Ch. 8.5 - 3. What two joints form the elbow joint?
Ch. 8.5 - Describe four ligaments that stabilize the knee...Ch. 8.5 - Prob. 5QCCh. 8.5 - What features increase the stability of the...Ch. 8.5 - Which bones articulate to form the hip joint?Ch. 8.5 - 8. Why is the shoulder joint less stable than the...Ch. 8 - Which of the following is not a function of...Ch. 8 - 2. Which functional joint class includes freely...Ch. 8 - Identify each of the following joints as synovial,...Ch. 8 - In general, when mobility of a joint _____, its...Ch. 8 - 5. Mark the following statements as true or...Ch. 8 - Fill in the blanks: The articulating ends of bones...Ch. 8 - 7. What is/are the function(s) of synovial...Ch. 8 - 8. Which of the following correctly describes the...Ch. 8 - Bone movement at a joint is described around an...Ch. 8 - Match the following terms with the correct...Ch. 8 - Define each of the following movements or movement...Ch. 8 - Mark the following statements as true or false. If...Ch. 8 - 13. Which of the following best describes the...Ch. 8 - The structure that stabilizes the shoulder joint...Ch. 8 - 15. Which factors contribute to the stability of...Ch. 8 - 1. Explain how the structure of each of the...Ch. 8 - 2. The primary action of the biceps brachii...Ch. 8 - Some individuals have an abnormally small and...Ch. 8 - 1. Some health practitioners claim that the...Ch. 8 - 2. Lauren has hurt her knee playing soccer. She...Ch. 8 - When articular cartilage is damaged, often...
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- Describe the differences in action between bilateral andunilateral contraction of the splenius muscles.arrow_forwardExtensor digitorum is a multi-tendoned muscle that controls the fingers and could be deemed an intrinsic muscle because the muscle itself is in the arm a.) True b.) Falsearrow_forwardYou would use this muscle to help you cross your legs. (Hint: sitting on the floor in a yoga posture—the lostus position—involves this muscle, too).This muscle group acts primarily on the knee; involved with extension at the knee.This muscle would help abduct the thigh (move the thigh away from the midline of the body).arrow_forward
- The stronger the percussion hammer taps on the patellar tendon, the greater the reflex contraction of the quadriceps femoris. Explain.arrow_forwardThe triceps brachii muscle has 2 different origin attachment points. True Falsearrow_forwardDescribe the qualities of the muscle fiber arrangement and tendon attachments of biceps femoris. Discuss synergist(s) and antagonist(s) muscles and their attachment sites of biceps femoris. Describe when synergists and antagonists contract compared to the biceps femoris.arrow_forward
- Order the following muscles from most muscle fibers per motor unit to least: biceps brachii, gluteus maximus, orbicularis oculi. Group of answer choices Orbicularis oculi, gluteus maximus, biceps brachii Gluteus maximus, biceps brachii, orbicularis oculi Orbicularis oculi, biceps brachii, gluteus maximus (no answer)arrow_forwardThis muscle group primarily acts on the knee; involved with flexion at the knee.This muscle is involved with plantar flexion of the foot (a ballet dancer would use this muscle to point his or her toes in a dance move, and plantar flexion is necessary for a ballet dancer to dance en pointe).This muscle is the prime mover (agonist) of dorsiflexion of the foot.arrow_forwardMatch the following muscle actions: A- Flexor carpi ulnaris B- Palmaris longus C- Flexor digitorum profundus D- Extensor carpi radialis brevis 18- Powerful flexor and adductor of hand. 19- Flexes distal interphalangeal joints. 20- Stabilizes the wrist during finger extension. 21- Extends and abducts the hand. 22- Tenses skin and fascia of palm during hand movements.arrow_forward
- If your biceps brachii muscle attaches to your forearm 2 inches below your elbow, the distance from the elbow to the palm of your hand is 18 inches, and you lift a 20 pound weight, how much pull must your muscle exert to achieve elbow flexion? If your biceps brachii muscle attaches to your forearm 2 inches below your elbow, the distance from the elbow to the palm of your hand is 18 inches, and you lift a 20 pound weight, how much pull must your muscle exert to achieve elbow flexion? hhharrow_forwardWhy can you lift a larger load when your elbow is slightly flexed and your biceps muscle is at an intermediate length than you can when your elbow is fully extended?arrow_forward
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